Alternating Current Corona in Foul Weather II - Below Freezing Point

Boulet, L.-P.; Cahill, L; Jakubczyk, B. J.

doi:10.1109/tpas.1966.291611

Cited by 12 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The magnitude of the discharge could be acquired from the pulses in discharge current, both of which depend on the sampling accuracy of the discharge pulses. Another technique of the measurement is Q-V trace method [11][12][13][14][15][16]. The accumulated discharge power and the magnitude per exciting cycle can be measured directly, which is easier for the recording of the continuous signal.…”

Section: Experimental Methodsmentioning

confidence: 99%

Dynamic characteristics of the corona discharge during the energised icing process of conductors

Shu

et al. 2013

IET Generation, Transmission & Distribution

View full text Add to dashboard Cite

Considerable differences exist between the energised icing process and the non-energised icing process of conductors. The main reasons that contribute to these differences are the complex interactions between the icing process and the corona discharge. To reveal these interactions, the dynamic characteristics of the corona discharge in energised icing process have to be studied. The energised icing tests of conductors are carried out in the artificial climate chamber. The short-term statistical characteristic and the long-term variance trend of corona properties are obtained by using the Q-V trace method. Experimental results are analysed as well. The results indicate that the distribution of the magnitude and the power of the discharge approximately obeys the normal distribution. Also, with the accumulating of the ice, the mean values of the shortterm discharge power and the magnitude increase initially then saturation appears after the increasing period. The saturation time is related to the icing velocity of the conductor. When the electric field strength is >10 kV/cm, the icing velocity will decrease if the electric field is increased. The standard deviations of the magnitude remain in the same level when the electric field is varying.

show abstract

Section: Experimental Methodsmentioning

confidence: 99%

Dynamic characteristics of the corona discharge during the energised icing process of conductors

Shu

et al. 2013

IET Generation, Transmission & Distribution

View full text Add to dashboard Cite

show abstract

“…The formula of corona onset field obtained by Peek via many tests in 1929, but some environmental factors ignored in the expression [13], so there are some difference between calculation and engineering application [14,15]. In [16], icicles which appear during the icing process can distort the electric field, and corona discharge occurs partially even on conductors to which applied low voltage. Corona discharge characteristics of glaze under DC positive voltage [17] shows that discharge quantity larger when icicle tips growing longer and sharper, higher conductivity magnifies an amount of corona discharge.…”

Section: Introductionmentioning

confidence: 99%

Study on the influence of charged glaze on the corona onset voltage of bundle conductor

Chen

Jiang

Shu

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

Glaze grows on the conductor surface will affect corona onset voltage (COV). Wires iced under voltage is often neglected and scaled models always adopted to study the actual bundle conductors, there is no lights have been thrown into the downtrend of COV during charged icing. AC corona tests of iced bundle conductors implemented in the Multifunction Climate Chamber, the UV imaging camera and I-U curve fitting applied to analyze the COV. Finite element models of iced conductor established to discuss how the glaze icicles affect electric field. Results show that glaze cut the COV down greatly. Different icicle morphology leads to distinct COV values. With more sub-conductors, bundle conductor gets higher COV in the same icing time. With the Increase of icing time, COV decreases with the rate slow down. Higher conductivity has no effect on morphology but reduces the COV. Sharper icicles lead to more seriously field distorted and lower COV values. This paper provides reference for selection and designation of transmission line in glaze icing areas.

show abstract

Study on the effects of glaze icing on the corona onset characteristics of stranded conductors

Jiang

Shu

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

Alternating Current Corona in Foul Weather II - Below Freezing Point

Cited by 12 publications

References 7 publications

Dynamic characteristics of the corona discharge during the energised icing process of conductors

Dynamic characteristics of the corona discharge during the energised icing process of conductors

Study on the influence of charged glaze on the corona onset voltage of bundle conductor

Study on the effects of glaze icing on the corona onset characteristics of stranded conductors

Contact Info

Product

Resources

About